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Light welterweight boxing · most active 2000s

Juan Díaz

67″ reach · +1.55% reach advantage · 44th percentile

Boxing record

42–4

Juan Díaz has a reach of 67″ against a height of 66″ — a reach advantage of +1.55%, short for light welterweight boxing and the 44th percentile of the 97 compared here.

20002010UNFILEDwin v Michael Lucero, 2000win v Antonio Young, 2000, kowin v Starr Johnson, 2000, kowin v Juan Carlos Alvarez, 2000, kowin v Miller Vazquez, 2000win v Rafael Ortiz, 2000win v Rudolfo Lunsford, 2001, decisionwin v Ubaldo Hernandez, 2001win v Scott Buck, 2001, kowin v John Trigg, 2001, decisionwin v Carlos Horacio Nevarez, 2001, kowin v Mahan Washington, 2001, decisionwin v Bradley Jensen, 2001, decisionwin v Arthur Cruz, 2002, kowin v Roy Delgado, 2002, kowin v Peter Nieves, 2002, decisionwin v Michael Davis, 2002, decisionwin v Nelson Ramon Medina, 2002, decisionwin v Juan Carlos Juarez, 2002, decisionwin v Joel Perez, 2003, kowin v Francisco Lorenzo, 2003, decisionwin v Eleazar Contreras Jr., 2003, decisionwin v John Bailey, 2003, kowin v Julien Lorcy, 2004, decisionwin v Lakva Sim, 2004, decisionwin v Martin O'Malley, 2004, kowin v Arthur Cruz, 2005, kowin v Billy Irwin, 2005, kowin v Fernando Angulo, 2006, decisionwin v Randy Suico, 2006, kowin v José Cotto, 2006, decisionwin v Julio Díaz, 2007, kowin v Acelino Freitas, 2007, kowin v Michael Katsidis, 2008, decisionloss v Nate Campbell, 2008, decisionloss v Paulie Malignaggi, 2009, decisionloss v style="text-align:left;"|Juan Manuel Márquez, 2009, koloss v Juan Manuel Márquez, 2010, decisionwin v Juan Santiago, 2013, decisionwin v Adailton De Jesus, 2013, kowin v Gerardo Cuevas, 2013, kowin v Carlos Cardenas, 2014, decisionwin v Gerardo Robles, 2014, decisionwin v Cesar Vasquez, 2016, kowin v Fernando Garcia, 2016, kowin v style="text-align:left;, no date on recordresult not stated v Opponent, no date on record
WON ABOVE·LOST BELOW BAR = STOPPAGE·BROKEN BAR = SUBMISSION·TICK = DECISION 2000–2016 · 2 UNDATED

SOURCE·Juan Díaz (boxer) — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-07

How this record is compiled

  1. Measurements come from the fighter's English Wikipedia infobox; the bout list is parsed from the results table on the same article, read on 2026-07-07. Boxing tables are read by header name and MMA records by the fixed column order of the MMA record template — two different parsers, because reading MMA rows as a boxing table returns a fighter's boxing record in place of their real one.
  2. A bout enters the ledger with whatever fields the source states: result, opponent, method, round, year. Any field the source leaves empty stays empty here. A date that cannot be established is left blank rather than inferred, and the bout is still counted.
  3. A no contest is counted and printed as a no contest. It is never folded into the wins, the losses or the draws, and it never disappears to make a total balance.
  4. Where the article's infobox total disagrees with its own results table, both figures are published and each is labelled with where it came from. Nothing is averaged and nothing is reconciled against a second database.
  5. Percentiles rank this fighter among the 97 light welterweight boxing fighters in the dataset — the most specific group of at least 30 that this fighter belongs to.
reach advantage = (reach − height) ÷ height × 100

Sources, exclusions and known limits →

Bout record

Every bout the article's own results table lists, in order. A dash is a field the source leaves empty — it is not a zero and it is not a guess.

Bout-by-bout recordAUG 2026
YearResultOpponentMethodRd
2016 W Cesar Vasquez KO/TKO8
2016 W Fernando Garcia KO/TKO9
2014 W Carlos Cardenas Decision10
2014 W Gerardo Robles Decision10
2013 W Juan Santiago Decision10
2013 W Adailton De Jesus KO/TKO5
2013 W Gerardo Cuevas KO/TKO6
2010 L Juan Manuel Márquez Decision12
2009 L Paulie Malignaggi Decision12
2009 L style="text-align:left;"|Juan Manuel Márquez KO/TKO9
2008 W Michael Katsidis Decision12
2008 L Nate Campbell Decision12
2007 W Julio Díaz KO/TKO9
2007 W Acelino Freitas KO/TKO8
2006 W Fernando Angulo Decision12
2006 W Randy Suico KO/TKO9
2006 W José Cotto Decision12
2005 W Arthur Cruz KO/TKO5
2005 W Billy Irwin KO/TKO9
2004 W Julien Lorcy Decision12
2004 W Lakva Sim Decision12
2004 W Martin O'Malley KO/TKO2
2003 W Joel Perez KO/TKO6
2003 W Francisco Lorenzo Decision10
2003 W Eleazar Contreras Jr. Decision10
2003 W John Bailey KO/TKO7
2002 W Arthur Cruz KO/TKO4
2002 W Roy Delgado KO/TKO6
2002 W Peter Nieves Decision10
2002 W Michael Davis Decision10
2002 W Nelson Ramon Medina Decision8
2002 W Juan Carlos Juarez Decision8
2001 W Rudolfo Lunsford Decision4
2001 W Ubaldo Hernandez —8
2001 W Scott Buck KO/TKO1
2001 W John Trigg Decision6
2001 W Carlos Horacio Nevarez KO/TKO1
2001 W Mahan Washington Decision6
2001 W Bradley Jensen Decision6
2000 W Michael Lucero —6
2000 W Antonio Young KO/TKO2
2000 W Starr Johnson KO/TKO3
2000 W Juan Carlos Alvarez KO/TKO1
2000 W Miller Vazquez —1
2000 W Rafael Ortiz —1
undated W style="text-align:left; ——
undated ? Opponent ——

10 of these opponents have their own page here.

SOURCE·Juan Díaz (boxer) — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-07

Reach in context

Reach advantage

+1.55%

67″ reach on a 66″ frame

Compared against 97 light welterweight boxing fighters. Median 2.34%.

-3%light welterweight boxing reach advantage8.9%
Measurements
Reach67″ (170.2 cm)12th pct
Height66″ (167.6 cm)16th pct
StanceOrthodox
DivisionLight Welterweight Boxing
competed at 2: lightweight, light welterweight — compared here against the last
Most active decade2000s — 37 of 45 dated bouts
CountryMexico

Record

Boxing record

42–4

46 bouts on record

Finish rate

50%

of wins ended inside the distance — light welterweight boxing median 56%, 36th percentile

By knockout: 21 (50%)By decision: 21 (50%)
  • By knockout 50%
  • By decision 50%

The career, bout by bout

47 recorded bouts from 2000 to 2016. Every incumbent shows this as a table you have to read; here it is as a shape you can see.

2000 2010 win vs Michael Lucero (2000)win vs Antonio Young (2000)win vs Starr Johnson (2000)win vs Juan Carlos Alvarez (2000)win vs Miller Vazquez (2000)win vs Rafael Ortiz (2000)win vs Rudolfo Lunsford (2001)win vs Ubaldo Hernandez (2001)win vs Scott Buck (2001)win vs John Trigg (2001)win vs Carlos Horacio Nevarez (2001)win vs Mahan Washington (2001)win vs Bradley Jensen (2001)win vs Arthur Cruz (2002)win vs Roy Delgado (2002)win vs Peter Nieves (2002)win vs Michael Davis (2002)win vs Nelson Ramon Medina (2002)win vs Juan Carlos Juarez (2002)win vs Joel Perez (2003)win vs Francisco Lorenzo (2003)win vs Eleazar Contreras Jr. (2003)win vs John Bailey (2003)win vs Julien Lorcy (2004)win vs Lakva Sim (2004)win vs Martin O'Malley (2004)win vs Arthur Cruz (2005)win vs Billy Irwin (2005)win vs Fernando Angulo (2006)win vs Randy Suico (2006)win vs José Cotto (2006)win vs Julio Díaz (2007)win vs Acelino Freitas (2007)win vs Michael Katsidis (2008)loss vs Nate Campbell (2008)loss vs Paulie Malignaggi (2009)loss vs style="text-align:left;"|Juan Manuel Márquez (2009)loss vs Juan Manuel Márquez (2010)win vs Juan Santiago (2013)win vs Adailton De Jesus (2013)win vs Gerardo Cuevas (2013)win vs Carlos Cardenas (2014)win vs Gerardo Robles (2014)win vs Cesar Vasquez (2016)win vs Fernando Garcia (2016)
winlossdraw / NC2000–2016

Career span

17y

2000–2016

Longest unbeaten run

34

without a loss — draws do not break it

Busiest year

2001

7 bouts

Recorded bouts

47

45 with a date

Standing questions

What this record does and does not say

What is Juan Díaz's record?
42–4 in boxing. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 47 bouts individually.
How many of Juan Díaz's bouts have no date?
2 of 47. The source lists them without a date this site can read, so they are printed with no year, sorted last, and drawn past the double rule in the record line rather than placed in the chronology. No year has been inferred for any of them.
Does a no contest change a record here?
No. A no contest is not a win, a loss or a draw, and it is never folded into one. It is counted and printed separately, so a 20–0 record with two no contests is shown as exactly that rather than as 22–0 or as 20–0 with the no contests dropped. The same applies to a bout overturned after the fact where the source records the change.
What happens when sources disagree about a fight?
This site publishes one source — the fighter's English Wikipedia article, read on the date printed under every table — and it does not silently reconcile that against anyone else's database. Where the article's own infobox total and its own results table disagree, both are shown and the page says which one each figure came from. Nothing is averaged, and no field is filled in from a second source to make a total balance.

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Published by

Amit Sharma

Auckland real-estate agent and marketer. Builds free, sourced data tools.